Sprinkler



July 17, 1928. 1,677,485

L. R. NELscNf" g SPRINKLER Filed Julie 9, 1924,

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- sprinklers of the rotating'type Patented July 17, 1928.

UNITED Asfmfras LEWEN R. NELSON, OIEV PEORIA, ILLINOIS.

SPRINKLER.

Application filed June 9,

This invention has reference to lawn More particularly, it pertains to a sprinkler involving a rotatable perforate sprinkler-head mounted upon a standard from which it is supplied with water underpressure. An object of the invention is to provide a sprinklerhead from which the lwaterstreams will be projected in Such manner as to obtain an even covering of the area to be treated.

Another object` is to provide a metal stamping for a sprinkler-head in which acf curacy of form `can Vbe maintained and wherein anglesfo throw of water-streams will be indentic'al in all devices produced.

Still another object is that in producing a stamped form of sprinkler-head it can be lso made that it will withstandl rough `treatment and cannot therefore be so altered in shape that the axes of its water-stream orilices will be changed relatively.

A further object is that of making a sprinkler-head of a Sheet' metal stamping by which it can be produced cheaply and marketed at a comparatively low cost tothe consumer. Y

To the end that my invention may be clearly understood, I have provided the accompanying drawing wherein Figure 1 is a side elevation of a standard of any approved form showing the sprinklerhead ofmy invention mounted thereon. y

Figure 2 is aplan ofthe sprinkler-head,

` according to my invention, much enlarged Vfromthat shown in Figure 1,.

Figure 3 is a side elevation of the same.

yFigure 4 is a vertical section on line 4 4,

Figure 3, of my sprinkler-head, but much enlarged, 'and a Swivel connection by which it is attached to the standard illustratedin .Figure 1. Y Y

y same on lined-6, Figure 5. 1

- of one end of the sprinklerhead..

Figure 5 -is a plan of part of the sprinkler# head as shown in Figure 2 produced on lal larger scale.

Figure 6 is a transverse sectionV of the 1924.V serial No. 718,721.

which a hose, not shown, may be connected.

Into thev upper end ofthe pipe 2 is screwed a tubular part 4, for example, provided with a terminal flange 5 at its upper extremity with the lower side or surface of which a collar 6 engages in any usual way by which, while the latter may rotate on the said part 4, it can lift under water pressure to form a practically leak-tig t joint between it and the said flange 5. A lock-nut 7 engages the said part 4 and serves to secure it relatively to the pipe 2. l

The vsprinkler-head ,constituting the invention herein comprises a single bottom portion or plate 8, and a separate top' transversely archedk portion 9. Said plate S has a hole 10 therein atthe middle 'of its length and receives the upper end of the described collar 6, the latter terminating in a reduced neck-,portion 11 shownA in dotted lines, Figure 4, which when the plate hasbeen placed in 'position,vreceiving saidneck-portion, is swedged outwardly and downwardly upon said plate, as shown in continuous lines, completing a. firm structure.

The said plate 8 is long and narrow but is enlarged at that portion in which the hole is formed as shown` in Figure 2 for strengthyening purposes and to receive a domedV part of thetop or body-portion to be described.

Said top or body-portion is stamped from l light metal and is arched transversely, `as described previously, there being a longitudinally extending rib 12y at its middle length raisedabove the general level of the arch as clearlyshowninthe first four figures, this being prrvivided for strengthening and bracing the body as well as to admit of reeyflowvof waterentering said body topass to either end thereof. .Y

Also, this member hasia flaring domed portion 13 at its middle length where'it overlies the enlarged middle, of the bottom Sand the collar 6 permitting'free entrance of water from the latter. y

Said bottom 8 is slightly larger Vthan the body-portion 9 so that its edges project beyond thosel of therlatter, being turned up uponfthe lower marginal edges of said portion asfclearlyshown at .14. `The bottom may be arched, also, as 8 as indicated .in

Figures 4 and 6, the latter" figure being a cross sectionof that` member "on line 6,6,l Figure 5, the Figures 7 8 and 9 showing a flat-plate only. Y

it each side of the center rotation the sired angle with respect to the longitudinal line of the head, namely the radius of rota-` v piane.

tion. The outermost one A lies at an angle of about 400 to the plane of rotation. The neXt adjacent face 16 lies at an angle of about 55o to said plane, and the innermost face 17 lies at an angle of about 59o to said The name angles areV merely approximate, it being desired, only, that they have different angles relatively so that the water-streams projected will describe different angles, the relation of differences in direction of stream-throw being denoted by the dotted lines in Figure 7, 8 and 9.

Now, since the outermost said face 15 lies at the greatest angle to the plane of rotation and at an angle to the longitudinal line of i `the head the stream projected therefrom will be discharged to the farthest limit, and since the orifice 18 in the face 16 discharges at a higher angle the water therefrom though ascending higher will fall inward from the point on the ground where'the streams from f the'iorifice in the face 15 fall, and by the same rule, the orilice in the innermost face 17 discharges at a still higher angle causing the I stream therefrom to'fallinward from that of the stream projected from the said face 16. Y v

Duev to this arrangement, therefore, the Several orifices in effect deliver streams which fallin concentric circles, or one within another. Butdue to the natural breaking ofthe vdrops of water in passing through the air a line mist-like delivery over the included territory results. And it is clear that if all of the'streams were discharged `at the same angle the included area sprinkled would not 4be evenly treated. In fact, a narrow zone only would be covered and well soaked whereas the area inward therefrom would be but indifferently moistened.

I have foundin practice that the angle of lateral throw of the streams is important as governing the speedof rotation for a proper water`distribution. It is clear that the more nearly the direction of. stream-travel aproaches a line lying atright angles to the ongitudinal line ofthe head they fasterthe latter will rotate. Now, if rotation is too rapid the spray willbe vfinely divided and cannot be thrownto ,the desired distance whereas if there is a slower. lmovement =a farther throw of heavier drops is possible with a better covering power in consequence.

,',Therefore the positions of the faces 15, 16

'and 17 are sodetermined thatvthe orifices will have just the proper angle of throw toV the end that the speed of Arotation will be of the streams can be maintained in theirA proper relation in `all sprinkler-heads.pro-

duced and the device canrbe manufactured at a low cost and yet due to the braced form will be sturdy and resistant to blows or strains naturally imposed in its use and handling.

However, not my intention to be confined to the exact form shown Vsince minor ,changes may be it is to be understood that it is i made while maintaining the relation of face- Y angles. Y And while other ways of producing the head may be possible the relation of the oriliceswould be difficult to produce. There'- fore, the method used herein is to bespreferred.` Further, it is not my intention to adhere strictly toV the single straight form ofthe sprinkler-head 'shown Since the numher of arms radiating from the center of rotation may be increased as desired.

I claim as new:

1. A hollow relatively long and narrow sprinkler-head rotatably mounted at the middle of its length, and being relatively low in height outward from its center of rotation, its longitudinal top line outward from said center being substantially parallel with its base, its upper vportion at opposite sides Vof the centerhaving a series of orifices whose axes are disposed at different angles withrespect to one another and at different angles with respect tothe plane Io f rotation, and' alsol disposed at f different- Vangles with respect to a plane lying perpendicular both to lsuchplane of rotation and to the longest vaxis of said head, said orifices being in substantial alignment. Y Y c 2. A hollow relatively, longv` and narroij7 sprinkler-headof stamped metal rotatably mounted atthe middle of` its length, Vthere being a seriesv of discharge orifices in said head at each side of its center of rotation,

each said series lying in a line substantially lparalleling the longest axis ofthe head, the axes ofthe orifices of each of said series being disposed at 'different angles with respect to oneanother, andthe axis of Veach orifice of 4,

the series disposed at a different angle with respect to the plane of' 'rotationfnand at a different angle with vrespect to a plane erected perpendicularly both to such plane of' rotation and to the longest axis of said head, the n angle of inclination :of said ofthe orifices ro ressivel i iiicreasinr with res ect i to the plane of rotation as the center of ent angles to one another and inclined at relatively different angles to the plane of rotation,' and also lying at relatively different angles to a plane erected perpendicu larly to the said plane of rot-ation, and a jet orifice perforating each of theJ facets.

AQA hollow relatively long and narrow rotary sprinkler-head having Y at opposite sides of its center of rotation a series of facets, those of one .series being `opposed in position to those of the other, and all of said facets being inclined at relatively different angles to the plane of rotation 'and to a plane lying perpendicular to said plane of rotation and at right angles to the longest measurement of said head, and an orifice in each of said facets, said facets from said center of rotation outward progressively ap-v proaching more nearly a position parallel to the second named plane whereby streams projected from said orifices are discharged at progressively lower angles in receding from said center of rotatie v 5. A rotatable sprinkler-head including in its construction an elongated laterally arched relatively narrow body of sheet metal having formed midway its length a raised rib extending longitudinally thereof, and also having at opposite ends a series of facets inclined at relatively different angles to one another, each series faciiigoutwardly and laterally from the center. vof rotation and each having a jet orifice perforating it,

and a bottoni portion, the marginal edgev of one of the portionsengaging over those of the other. Y Y

6. In a rotatable sprinkler-head, aii eloii gated laterally arched body portion of relacross the said dome portion, said rib being integral with and forming part of said dome, and also having a series of facetsv inclined at relatively different angles to one another facing both in a lateral direction and outwardly from said center of rotation and provided each with a jet orifice, a bottom portion whose marginal edges engage those of the body yin a water-tight manner, there being an opening in the bottom beneath the said domed portion, and a waterconveying fitting extending into said opening and engaging upon the inner side of said bottom.

7. A stamped metal sprinkler-head including' a body portion relatively long and narrow and arched transversely throughout its length and provided atl eachv side of a point in its middle length with a. lseries of spacedl facets, one series thereof facing in a direction opposite that of the other series and lin a lateral direction away from said point, the

angles of inclination of the facets progres-i lsively decreasing in steepness `of angle with respect to the plane of the body as they ap'- proach '.said middle length of said body, there being an orifice in each of said facets.

8. A stamped metal sprinkler-head including a body portion relatively long, and' narrow and larched transversely throughout its length and' provided at each side of a Vpoint in its middle lengthiwith aV series of" spacedfacets, one'series thereof facing in Va direction opposite that of the otherr series and inra lateral direction away fromY said point, the angles of inclination of the facets progressively decreasing in steepness of angle with respect to the plane of the body as they approach said middle Ylengt-h of said body, there being anorifice in each said facet, the axes of the several orifices being perpendicular to the planes of said facets.

9. A stamped metal sprinkler-head comprising a body arched transversely and of relatively long, narrow form having terminal edges lying in a single plane, a. base abutting the edges at the open side of the body, thev edges of one overlapping those of the other, said base being rotatably mounted at the middle of its length,`and said body having a facet formed 'therein near each end facing away from the center of rotation at an angle to the bodys longest through each said facet. y

l0. A sprinkler head including in its construction a body of drawn metal transversely arched and relatively long and narrow,

sol

axis, there beingva discharge orifice opening the top of the arch at'each endof the body v.

being substantially parallel to the bodysV base, said body adapted to be rotated about the middle of its length and perforated, the median portion thereof being domed and including a raised integral longitudinal holl low rib siirmountingthe dome merging into the latter and at its ends merging into the arch of the body at opposite sides of said dome.

l1. A stamped metal sprinkler-head including a closed body portion relatively long and narrow and arched transversely .throughout and mounted to rotate, the saine having therein at each side of a point in its l middle length a facet, one vfacing in a different direction from that of the other,lthereV being anoriiice in each facet, the axes of the A orifices being inclined at anangle to the plane of rotation, at an angle toeach other f and atan angle to the longest axis of the body.

12. sprinkler-head includingv in itsconstruction a body of drawn metal transversen ing a. discharge orifice,

ly arched and relatively long and narrow,

`and having a facet formed therein at cach side of the center of rotation, each facing outwardly a substantially flat base abutting the edges of the body, the edge of one of, the parts being folded upon that of the other, and said base being arched in a longitudinal direction inwardly toward said body.` i Y 13. A sprinklervof the rotary type including in its construction' a base, a body lportion attached thereto, the two together forming a closed sprinkler-head, said base having an opening therethrough for passage of Water, a collar having at one enda reduced portion received Within the opening, and also havingia shoulder engaging Vthe outer. face of said base, the said reduced portion within the sprinkler-head being turnedv over upon the base toiclampsaid base upon the shoulder, said collar havingv an integral from said center and each havange at its otherl end, a tubular fitting eX- tending freely into the collar and having an external shoulder at the end Within said collar toengage the flange of said collar .for rotation of the latterthereon, the other end `of the fitting extending` outside. the collar thereof, the axes of the bores of successive openings from the center of rotation out- Ward intersecting the plane `of rotation of f the tube at progressively decreasing angles, said axes'lying 1n different planes normal to the plane of rotation, the outlets of saidV openings being in substantially alignment. In testimony Whereofl affix my signature.

LEVVEN R. NELSON. 

